PythonGUI快速学习及使用-PySimpleGUI（四）

多个窗口

import PySimpleGUI as sg
  
# Create some widgets
ok_btn = sg.Button('Open Second Window')
cancel_btn = sg.Button('Cancel')
layout = [[ok_btn, cancel_btn]]
  
# Create the first Window
window = sg.Window('Window 1', layout)
  
win2_active = False
  
# Create the event loop
while True:
  event1, values1 = window.read(timeout=100)
  
  if event1 in (None, 'Cancel'):
    # User closed the Window or hit the Cancel button
    break
  
  if not win2_active and event1 == 'Open Second Window':
    win2_active = True
    layout2 = [[sg.Text('Window 2')],
          [sg.Button('Exit')]]
  
    window2 = sg.Window('Window 2', layout2)
  
  if win2_active:
    events2, values2 = window2.Read(timeout=100)
    if events2 is None or events2 == 'Exit':
      win2_active = False
      window2.close()
  
window.close()

点击“Open Second Window”后将打开窗口2

实例：用户名与密码不匹配（即密码输入错误）

import PySimpleGUI as sg

id_key_dict = dict()
id_key_dict["123"] = '456'

# 创建第一个窗口
layout = [[sg.T('输入您的ID'), sg.In(key='-ID-')],
          [sg.T('输入您的密码'), sg.In(key='-KEY-')],
          [sg.B('登录'), sg.B('取消')]]

window = sg.Window('登录窗口', layout)


win2_active = False
win3_active = False

# 创建事件循环
while True:
    event1, values1 = window.read(timeout=100)
    a = values1['-ID-']
    b = values1['-KEY-']
    if event1 in (None, '取消'):
        # 用户关闭了窗口或点击了“取消”
        break

    if not win2_active and event1 == '登录':
        if (a, b) != (a, id_key_dict[a]):
            win2_active = True
            layout2 = [[sg.Text('密码错误！')],
                       [sg.Button('退出')]]

            window2 = sg.Window('输入错误', layout2)
        else:
            win3_active = True
            layout2 = [[sg.Text('登录成功！')],
                       [sg.Button('退出')]]

            window3 = sg.Window('输入正确', layout2)

    if win2_active:
        events2, values2 = window2.Read(timeout=100)
        if events2 is None or events2 == '退出':
            win2_active = False
            window2.close()

    if win3_active:
        events3, values3 = window3.Read(timeout=100)
        if events3 is None or events3 == '退出':
            win3_active = False
            window2.close()

window.close()

输入正确：

输入错误：